Rain not enough to extinguish NSW fires

Firefighters are still working to contain northern NSW bushfires before temperatures rise in coming days, as Prime Minister Scott Morrison visited bushfire-ravaged communities.

Busbys Flat and Drake fires continued to burn along with several other blazes on Sunday, after a horror week in which an elderly couple died and at least 55 homes were destroyed.

On Sunday, the prime minister and NSW Premier Gladys Berejiklian visited the Northern Rivers Fire Control and Emergency Operations Centre in Casino, close to where bushfires left a trail of devastation in their wake.

NSW Rural Fire Service spokesman James Morris on Saturday said rain had eased conditions significantly, but it wasn't enough to extinguish the fires.

He said crews would keep working to contain them before temperatures and winds rise again in the coming week.

"We haven't had enough rain to really make a difference to the ground fuels, so they will dry out very quickly once we see some sunny and windy weather again," Mr Morris told AAP.

He said temperatures and winds were expected to increase from Tuesday.

The Busbys Flat fire, which authorities believe was deliberately lit, was classed as "being controlled" on Sunday, while the Drake blaze, which was started over a month ago by a lightning strike, was under control.

The latter fire claimed the lives of Bob Lindsay, 77, and his wife Gwen Hyde, 68.

Their bodies were found in their destroyed Coongbar home on Thursday some two days after fires roared through the region.